Crushing analysis and multi-objective crashworthiness optimization of GFRP honeycomb-filled energy absorption devices

Paz, J.F. de; Díaz, J.; Romera, Luis; Costas, Miguel

doi:10.1016/j.finel.2014.07.006

Cited by 93 publications

(29 citation statements)

References 42 publications

(44 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This data is obtained by a design of computational experiments process with some kind of criteria or distribution that indicates in which parts of the domain should be more or less information. Choosing this criteria is not a trivial task and some situations require methods based on adaptive surrogate models to deal with this problem (Picheny et al 2010;Picheny et al 2010b;Bect et al 2012). This kind of methods have been applied to surrogate based RBDO for instance in Bichon et al (2009) and Dubourg et al (2011).…”

Section: Reliability-based Design Optimization and Surrogate Modelingmentioning

confidence: 99%

“…Later, multiple combinations of these tubes with additional materials were developed. Some relevant designs with carbon and glass were presented in Starbuck et al (2006) and Shin et al (2002), Stamenović et al (2011), andPaz et al (2014), respectively. Besides, the advances in computer science have allowed a fast development of finite element codes able to simulate and predict the behavior of these new designs with a reasonable degree of accuracy.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A multi-objective reliability-based optimization of the crashworthiness of a metallic-GFRP impact absorber using hybrid approximations

Montoya

Costas

Díaz

et al. 2015

Struct Multidisc Optim

Self Cite

View full text Add to dashboard Cite

In the field of automotive safety, the lightweight design of crash absorbers is an important research topic with a direct effect on the occupant safety levels. The design of these absorbers usually requires an optimization of their crashworthiness, which can include multi-objective and reliability-based optimization techniques. This process is very time-consuming, and in spite of the continuous growing of computational power, the problem needs a reliable solving scheme. The use of surrogate models and parallel computing are suitable alternatives to deal with this issue. However, the strongly non-linear response functions obtained from the finite element simulations need careful treatment. This work contributes with the application of a surrogate-based reliability-based design optimization method to an original design of a crash absorber made of metal and a glass-fiber reinforced polymer which is subjected to a frontal impact. Multi-adaptive regression splines models are employed to emulate the original responses, and three different approaches in the sampling stage of M. Cid Montoya the method are compared. The absorbed energy and the mass of the element are considered as objective functions, while the peak value of the force transmitted to the occupants of the vehicle is the design constraint. A discussion of the employed materials is presented and the proposed approaches are compared. Finally, several Pareto fronts are obtained as a solution to the probabilistic problem. Results show that a combination of aluminum and glass fiber reinforced polymer is optimum for this problem, and some design rules are offered.

show abstract

Section: Reliability-based Design Optimization and Surrogate Modelingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A multi-objective reliability-based optimization of the crashworthiness of a metallic-GFRP impact absorber using hybrid approximations

Montoya

Costas

Díaz

et al. 2015

Struct Multidisc Optim

Self Cite

View full text Add to dashboard Cite

show abstract

“…The inner reinforcement of metal tubes with composite structures is more uncommon, but some recent references can be found in [30,31].…”

Section: Introductionmentioning

confidence: 99%

Axial crushing of aluminum extrusions filled with PET foam and GFRP. An experimental investigation

Costas

Morin

Langseth

et al. 2016

Thin-Walled Structures

Self Cite

View full text Add to dashboard Cite

This research work investigated the axial crushing behavior of a circular aluminum extrusion in alloy AA6063-T5 filled with polymeric foam and a glass-fiber structure. The components were experimentally tested under quasi-static and impact loading conditions supported by a material testing campaign. Energy absorption, crush force efficiency and specific energy absorption were experimentally measured in order to assess the performance of a design proposal. Besides, the interaction effects between the different materials has been analyzed in depth and compared to the results for aluminum foam filled extrusions available in the literature. The confinement effect of the foam on the glass fiber plates has been found to have a very remarkable contribution to the energy absorption levels of the component, whereas a negligible foam-extrusion interaction was observed due to the gaps in the initial geometry of the specimen. The investigated component show an overall good performance, specially in terms of crush force efficiency. However, the specific energy absorption of the component was reduced by approximately 10 % compared to the aluminum extrusion alone.

show abstract

“…Furthermore, this also translates into a more effective exploitation of both the outer and inner materials' mechanical properties, as the energy absorbed by the complete structure is greater than the sum of the energy absorbed by both parts detached [21].…”

Section: Introductionmentioning

confidence: 99%

Size and shape optimization of aluminum tubes with GFRP honeycomb reinforcements for crashworthy aircraft structures

Paz

Díaz

Romera

et al. 2015

Composite Structures

Self Cite

View full text Add to dashboard Cite

Please cite this article as: Paz, J., Díaz, J., Romera, L., Costas, M., Size and shape optimization of aluminum tubes with GFRP honeycomb reinforcements for crashworthy aircraft structures, Composite Structures (2015), doi: http:// dx. AbstractCrashworthiness optimization of aircraft and automotive structures has become one the main research targets for their respective leading industries. The following research proposes a new design of an aircraft's vertical strut. The design consists of a hollow aluminum square tube with a glass-fiber reinforced polymer honeycomb-shaped inner structure. Size and shape surrogate-based optimization techniques are used, with the thicknesses of both materials, cell size and cell shape as design variables. The objective function chosen for the single-objective optimization is the specific energy absorption, while the metrics for the multi-objective optimization are the peak force, mass, absorbed energy and the specific energy absorption. An improvement of 22% of the specific energy absorption with low peak force values is obtained from the single-objective optimization by significantly changing all design variables. Two Pareto fronts have been obtained from the multi-objective optimization confronting, the specific energy absorption against the peak force and the mass against the energy absorbed. When compared to the baseline model, the optimized models show substantial improvement, increasing the specific energy absorption by 65% or reducing the peak force by over 55%. It has been observed an important effect of the cell shape on the model's performance.

show abstract

Crushing analysis and multi-objective crashworthiness optimization of GFRP honeycomb-filled energy absorption devices

Cited by 93 publications

References 42 publications

A multi-objective reliability-based optimization of the crashworthiness of a metallic-GFRP impact absorber using hybrid approximations

A multi-objective reliability-based optimization of the crashworthiness of a metallic-GFRP impact absorber using hybrid approximations

Axial crushing of aluminum extrusions filled with PET foam and GFRP. An experimental investigation

Size and shape optimization of aluminum tubes with GFRP honeycomb reinforcements for crashworthy aircraft structures

Contact Info

Product

Resources

About